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# troubleshootings
Slackbot
05/26/2023, 10:53 AMThis message was deleted.
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David Anderson
05/26/2023, 2:10 PMSounds like you've ended up with a race condition. Perhaps you've done something non-deterministic. There are various things that can cause this.
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Martijn Visser
05/26/2023, 2:39 PMFlink support Scala 2.12.7, not Scala 2.12.8 as that is binary incompatible due to Scala making a breaking change. I'm guessing that can cause some unexpected issues
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Krzysztof Chmielewski
06/01/2023, 10:01 AMI think Scala support is externalized from Flink.
I remember reading somewhere here that Scala wrappers for Flink API are separate project and community for those is rather not that active.
I also remember reading that Java is more recommended than Scala.
You can use Scala, but if you encounter an issue, the community support can be limited.
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David Anderson
06/01/2023, 2:37 PMhttps://cwiki.apache.org/confluence/display/FLINK/FLIP-265+Deprecate+and+remove+Scala+API+support is a good starting point.
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